Mean Well LAD Series, User Manual

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Response:
R/W byte Data Length Data address bytes Data bytes CRC-8
0x55 0x05 0x00 20 0x08 FE 0x97
0x55 R/W byte R/W 0x55 : , decision bit, for reading instructions are
0x05 Data Length R/W bit : , the length of the data after the decision
0x00 30 0x08 FE 0x35 5 bytes In this instruction , , occupy a total of ,
so it is 0x05
0x00 20 Data address bytes LAD 0x00 20 : , data address transmitted by ,
is the main voltage address
0x08 FE:Data bytes LAD, which is the , the data content transmitted by
actual reading value of the main electrical voltage
0x08 FE 2302 the corresponds to the decimal number of , check
5.4.1.5 table, you can get that the corresponding unit of this
command is , that is, the input voltage at this time is 0.1V
2302*0.1V=230.2V
0x97 CRC-8 CRC- : Transmit data error code, refer to the instructions on
8 5.4.1.3 in
The error detection code for the response is CRC-8 LAD
calculated by the LAD's own MCU
5.4.2.3 Load current
Brief description: Load current read instruction
For example:
the LED-360DU to read load current
Request:
R/W byte Data Length Data address bytes Data bytes CRC-8
0x55 0x03 0x00 30 0x9F
0x55 R/W byte R/W 0x55 : , decision bit, for reading instructions are
0x03 Data Length R/W : , the length of the data after the decision bit
0x00 30 0x9F 3 bytes In this instruction , occupy a total of , so it is
0x03
0x00 30 Data address bytes : , the address of the data to be transmitted,
0x00 30 nt address is the load curre
0x9F CRC-8 : Transmit the data error detection code, refer to the
instructions on in , for which instruction is 0x9F CRC-8 5.4.1.3 the
5
Response:
R/W byte Data Length Data address bytes Data bytes CRC-8
0x55 0x05 0x00 30 0x02 91 0xBD
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5.4.2.4 Battery voltage
Brief description: Battery voltage read instructions
For example:
LAD-360DU to read the battery voltage to which the is
connected
Request:
R/W byte Data Length Data address bytes Data bytes CRC-8
0x55 0x03 0x00 40 0xC8
0x55 R/W byte R/W 0x55 : , decision bit, for reading instructions are
0x03 Data Length R/W n bit : , the length of the data after the decisio
0x00 40 0xC8 3 bytes In this instruction , occupy a total of , so it is
0x03
0x00 40 Data address bytes : , the address of the data to be transmitted,
0x00 40 is the battery voltage address
0xC8 CRC-8 : Transmit data error detection code, refer to the instructions
on in , for which instruction is 0xC8 CRC-8 5.4.1.3 the
Response:
R/W byte Data Length Data address bytes Data bytes CRC-8
0x55 0x05 0x00 40 0x12 B6 0x33
0x55 R/W byte R/W 0x55 : , decision bit, for reading instructions are
0x05 Data Length R/W : , the length of the data after the decision bit
In this instruction , , occupy a total of , 0x00 40 0x12 B6 0x33 5 bytes
so it is 0x05
0x00 40 Data address bytes, the data address t LAD 0x00 40 : ransmitted by ,
is the battery voltage address
0x12 B6: Data bytes lad , transmitted data content, this is the actual
reading value of the battery voltage
0x12 B6 4790 the corresponds to the decimal number of , check
5.4.1.5 table, you can get that the corresponding unit of this
command is , that is, the battery voltage at this time is 0.01V 4790
* 0.01V = 47.9V
0x33 CRC-8 : Transmit data error detection code, refer to the instructions
on in CRC-8 5.4.1.3
The error detection code for the response is calculated CRC-8 LAD
by the LAD's own MCU
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